Probability and Statistics resources for Statistics Students

My friend is taking some statistics classes. Here are some links to help her out and hopefully it helps you out too. Included are forums to ask for help or to give help if you're a math wiz. Besides the forums, I found a couple of good cheatsheets to help you study formulas and stuff, calculators and other information.

they have both advanced and basic probability and statistics. This one is also pretty active and has a statistics section as well.

6 "cheatsheets" to help you out.

Another good looking cheatsheet in PDF

How to use Google Calculator. I'm not sure how much this will help, it can do trig, log base 10, log base e, square roots but not sure if it will help you

Do you know of any other Probability and Statistics resources that are worthy of sharing? Let me know in the comments and I'll add them on here.